<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        div {
            width: 200px;
            height: 200px;
            background-color: pink;

        }
    </style>
</head>
<body>
    <div>teacher是真的帅</div>

    <script>
        alert("我也这么觉得")
    </script>
</body>
</html>